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In this series, I measure the power losses caused by air-oil contamination and intake valve carbon deposits. There are many videos documenting the benefits of walnut blasting, the preferred method of cleaning. Though I could not find any that verify horsepower gains on a dyno. The engineer in me had to know!
All engines are prone to some form of carbon buildup, but Turbocharged Direct Injection Engines are particularly vulnerable. Because all of the fuel is sprayed DIRECTly into the cylinders, there is no way to keep the intake valves clean (like Port Injection does). The mandatory emissions-compliance PCV and EGR systems recirculate fuel and oil vapors back through the intake, which inevitably burn onto the hot intake valves, creating a thick carbon coating. The extra crankcase pressure from the turbo puts extra oil and strain on these systems.
As this carbon builds up, it can start to interfere with the flow of the air into the cylinder. This could cause misfires, loss of power and fuel economy. Left unchecked, this carbon can even cause catastrophic damage.
After 4 years of beating, I could tell my 2.3L Ford EcoBoost was not hurt, but definitely not running at its peak. It exhibited rough idle and misfires, though nothing severe enough to trigger a Check Engine Light. While I wasn't 100% sure of the cause, I suspected that at over 100,000 miles, I could have carbon deposits on my valves.
It turned out that this was well worth the investigation.
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In Part 1, I performed a baseline dyno measurement on my 2015 Ford Mustang Ecoboost, after reaching 100,000 miles (90k added by me daily driving) and over 150 days performance driving on closed courses in 4 years:
• Daily Driven Race Car ...
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In Part 2 (this video), I perform the walnut blasting process, thoroughly documenting my process and all pitfalls that I discovered. The job was performed over an entire weekend, for less than $200.
PDF Ford 2.3L EcoBoost Intake Removal & Reinstall w/ Torque Specs: f01.justanswer.com/dcraig1000...
DISCLAIMER: I do not intend for this video to be a direct tutorial. It was made for entertainment purposes to demonstrate what I did to perform this process successfully. This is an invasive procedure, not ideal for a novice mechanic to perform on their own. If you screw this up, you may destroy your engine. I am not liable for any decisions that you make as a result of watching this video. You are solely responsible for the outcomes of any attempts to emulate any of the procedures depicted in this video. Your results may vary.
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In Part 3 (to be created), we will discuss the results of the cleaning and testing. They are incredibly significant, greater than I ever could have predicted. Be sure to subscribe and hit that notification bell so that you know the moment it comes out!
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Chapters:
0:00 - Welcome, Support Your Local Motorsports!
0:50 - Walnut Blasting Experiment Overview
1:54 - WARNING! This Can RUIN Your Engine!
2:39 - Engine Disassembly
4:50 - Intake Findings & Cleanup
7:20 - Carbon Build-Up & Prep For Cleaning
11:01 - How To Build A Walnut Blaster
12:25 - Walnut Blasting The Intake Valves
13:43 - The Results!
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COPYRIGHT DISCLAIMER: All the videos, songs, images, and graphics used in the video belong to their respective owners and I nor this channel does not claim any right over them.